rpc: catch errors from ReadResponseBody. Fixes issue 1014.
rpc: catch errors from ReadResponseBody.
Fixes issue 1014.

R=rsc
CC=golang-dev
http://codereview.appspot.com/1941041
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go